776 Hymenoptera in America North of Mexico 



(Robt.), Osmia sp., Trypargilum sp., T. collinum nibrocinctum (Pack.), T. tridentatum 



(Pack.). 

 Epistenia coeruleata Westwood, 1832. hi Griffith, Cuvier's Animal Kingdom, v. 15 



(Insecta, v. 2), p. 432. 

 Dasyglenes os7)iiae Ashmead, 1888. Canad. Ent. 20: 174. 9. 



Biology: Krombein, 1959. Ent. News 70: 19. 

 media Hedqvist. N. Y., Tex., Nev., Calif. 



Epistenia media Hedqvist, 1968. U. S. Natl. Mus., Proc. 124: 5. 9, cJ. 

 odyneri Ashmead. Ga., Mich., N. Mex., Ariz., Calif. Host: Leptochilus nifobasilaris (Ashm.). 



Epistenia odyneri Ashmead, 1896. In Davidson, Psyche 7: 336. 9. 



polita (Say). D. C, V.a, N. C, Ga., Fla. 



SpalangiusC.) politus Say, 1828. Contrib. Maclur. Lye. Phila. 1: 79. 9. 



Taxonomy: Gahan, 1951. Canad. Ent. 83: 174 (reasons for placing in Epistenia). 

 regalis Cockerell. Colo. Ecology: Reared from nest of Odynerus. This is probably a synonym 

 of coeruleata Westwood. 

 Epistenia regalis Cockerell, 1934. Psyche 41: 228. 9. 



Genus PTINOBIUS Ashmead 



Ptinobius Ashmead, 1896. Ent. Soc. Wash., Proc. 4: 11. 



Type-species: Charitopus magnificus Ashmead. Monotypic. 

 Megormyms Cockerell, 1926. Psyche 33: 36. 



Type-species: Megormyms amabilis Cockerell. Monotypic. 



Revision: Rohwer, 1919. Ent. Soc. Wash., Proc. 21: 4-6. 

 Taxonomy: Boucek, 1959 (1958). Mus. Natl. Pragae, Acta Ent. 32: 363. 

 agrili Rohwer. Calif. Host: Agrilus angelicus Horn. 



Ptinobius agrili Rohwer, 1919. Ent. Soc. Wash., Proc. 21: 5. 9, d. 

 amabilis (Cockerell). Colo. Host: Hoplitis producta (Cress.), Stelis sp., S. sexmaculata Ashm. 

 Megormyms amabilis Cockerell, 1926. Psyche 33: 37. 9. 



californicus Crawford. Calif. 



Ptinobius californicus Crawford, 1917 (1916). Insecutor Inscitiae Menstruus 4: 142. 9. 

 magnificus (Ashmead). Que., N. J., W. Va., Va., Kans., Tex. Host: Agrilus mficollis (P.), 

 Amphicems bicaudatus (Say), Lixus scrobicollis Boh., Tessaropa tenuipes (Hald.). 



Charitopus magnificus Ashmead, 1888. Kans. Agr. Expt. Sta., Bui. 3: App. p. IV. 9. 



Ptinobius dysphagae Girault, 1915. Ent. News 26: 130. 6. 



Taxonomy: Girault, 1917 (1916). Insecutor Inscitiae Menstruus 4: 142, 144. 

 Biology: Hopkins, 1891. W. Va. Agr. Expt. Sta., Bui. 15: 84. 

 texanus Crawford. Tex. Host: Araecems fasciculatus (Deg.). 



Ptinobius texanus Crawford, 1917 (1916). Insecutor Inscitiae Menstruus 4: 142. 9, cJ. 



Genus PLATYGERRHUS Thomson 



Platygerrhus Thomson, 1878. Hym. Scand., v. 5, pp. 4, 13. 



Type-species: Platygerrhus gracilis Thomson. Monotypic. 



Taxonomy: Kerrich and Graham, 1957. Soc. Brit. Ent., Trans. 12: 300-303. -Hedqvist, 1968. 

 Ent. Tidskr. 89: 36-39. —Graham, 1969. Brit. Mus. (Nat. Hist.) Ent., Bui. Sup. 16: 108-122. 



algonquina (Girault). Que., N. H., Conn., 111. 



Trigonodems algonquina Girault, 1917. Ent. News 28: 396. 9. 

 americanus Hedqvist. Ariz., Alaska, Calif. 



Platygerrhus americanus Hedqvist, 1968. Ent. Tidskr. 89: 38. 9. 



Genus PLUTOTHRIX Foerster 



Piutothrix Foerster, 1856. Hym. Stud., v. 2, pp. 46, 49. No species. 



